Realms of Magic

The Realms of Magic supplement for the Marvel Super Heroes role-playing game included a section on Magic Schools, more or less adhering to the three alignments popularized in early editions of Dungeons & Dragons: white magic = good; gray magic = neutral; black magic = chaotic/evil. A character could learn a particular school of magic yet violate those teachings. This would account for the villain Druid (Strange Tales #144-145), who is decidedly evil even though Realms of Magic (and D&D) describes druidic magic as neutral. Voodoo, on the other hand, is a white magic that can be perverted into chaotic magic.